小麦是“胎里富”庄稼,随着产量上升,在施足农家肥的基础上,还必须适当增加化肥用量。根据多年实践,在大部分高产的土头地上,基肥比追肥效果好,它能充分利用土壤的吸铵保氮性能,减少挥发、流失和被氧化成硝态氮,继而被还原的“脱氮”损失。但作基肥用量过多时会腐蚀籽种造成缺苗。为了充分发挥化肥深施作基肥的增产效益,减轻有害因 Wheat is “rich in fodder” crops. With the increase of output, on the basis of applying enough farm manure, the amount of fertilizer must also be increased appropriately. Based on many years’ practice, basal fertilizer has better effect than topdressing on most of the high yielding soil and soil. It can make full use of ammonium nitrogen absorption and nitrogen retention, reduce volatilization, loss and oxidation to nitrate nitrogen, and then reduce the “nitrogen ”loss. However, excessive use of basal body will corrode the seeds caused by lack of seedlings. In order to give full play to fertilizer production for the benefit of basal fertilizer, reducing the harmful effects